package cn.tedu.hello;

import java.util.Scanner;

public class Test4__Exchange {
	public static void main(String[] args) {
		int a= new Scanner(System.in).	nextInt();

		int b=new Scanner(System.in).nextInt();
		int c=a;
		a=b;
		b=c;
		System.out.println("a="+a+",b="+b);

	}
}
